What's new in 1.9.4
Performance
Much higher frame rates/performance improvements. The game's graphics commands now run on a thread of their own, beside the game, with far less processor work per draw (Direct3D 11 and Vulkan). On a fast PC this gives several times the frame rate of 1.9.3 and keeps the graphics card busier and usage scales better.
Game time keeps real time at any frame rate. Above the monitor's refresh rate (usually above 240 hz/fps) some animations in the game world would move slowly and feel delayed. They now run at the right speed at high frame rates.
A drop to 20 fps with Gandalf or Sauron at the Gates of Moria is fixed.
Frame rate and display
Frame rate limiter options has 30, 60, 75, 90, 100, 120, 144, 165, 200, 240, 300 and Unlocked (Options → Display, F10, the launcher, or [Display] fps=165). The limit holds in the menus too.
Vulkan is no longer held to the monitor's refresh rate with VSync off.
The exclusive Full-screen resolution list goes from small to large, so the right arrow goes to a higher resolution, as Window size does.